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Inessa [10]
3 years ago
15

How do I solve this proportion?

Mathematics
2 answers:
tekilochka [14]3 years ago
7 0
\frac{3}{x}=\frac{7}{10};\ \ \ \ D:x\neq0\\\\cross\ multiply:\\\\7\cdot x=3\cdot10\\\\7x=30\ \ \ \ /:7\\\\x=\frac{30}{7}\\\\x=4\frac{2}{7}
Elenna [48]3 years ago
6 0
Okay this should be simple. So take 10 times 3. Because those are diagnal to eachother. 10*3 = 30. Now take 30 divided by 7. 30/7 = 4.28 and rounded would be just 4.2. That's your answer! Hope i helped! 
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